Section insulator



May 17, 1932. s. MATTHES SECTION INSULATOR Filed Oct. 25, 1950 Q 5 VTVWTW WW ,r

Inventor SAMUEL :5. /Z47THE Ailorney i Patented May 17, 1932 UNITE STATES SAMUEL S. MATTHES, OF MANSFIELD,-OHIO, ASSIGNOR TO THE OHIO BRASS COMPANY,

F MANSFIELD, OHIO, A CORPORATION OF NEW JERSEY SECTION INSULATOR Application filed October 25, 1930. Serial No. 491,136.

My invention relates to section insulators used for sectionalizing conductors and particularly trolley wire conductors.

The object of my invention is to provide a section insulator in which the end members to which the trolley wire is attached may be adjusted in a vertical plane with respect to the position in which the device is used.

My invention resides in the new and novel construction, combination and relation of the various elements hereinafter described and shown in the drawings accompanying this specification.

In the drawings s Fig. 1 is a side view of my invention represented in the position in which it is normally used. 1 Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3 is a section on the line 3-3 of Fig. 1 and Fig. 4 is a section on the line 4 4c of Fig. 1.

Section insulators of the. class herein described are common and well known to those skilled in the art, but I have incorporated in my design features of construction which are new and novel and which add to the efliciency and successful operation of the device as compared with thoseof the prior art.

In the preferred embodiment of my invention I use a bar 1 of insulating material which is preferably wood and of such dimensions as necessary to meet the stresses and strains set up therein throughthetension in 'the trolley wire 2. To the member 1 is secured a support 3 which has a boss threaded 'to receive a hanger and transverse registering holes to receive the through bolt 4 which attaches the member 3 to themember 1.

Up to the present time the end castings f secured tothe member 1 have been of a single piece or of plurality of pieces rigidly secured together so that the device would act as a unit. Such construction will permit the end castings in time to move out of their original of such movement of the end members is to produce what might be described as a bowing of the under or running surface of the device and which is more or less objectionable at the presentday under high speed operation of the cars and which would have a tendency to cause arcing of the current collector as it passed across the section insulator and might have a tendency to even throw the collector from its normal position. I

In my invention I form the end castings in two parts, that is,'a clevis or socket part 5 having oppositely disposed side walls 6 and a bottom wall 7 and held to the member 1 by means of the through bolts 8 and 9. The through bolt 9 also holds in position a yoke shaped member 10 having oppositely disposed side arms 11 and a running or wear portion 12 which is engaged by passing current collector. Portion 12 is provided with a recess 13 which receives the end 14 of the bridging strip 15 of insulating material preferably wood. The member 10 is very easily removed and renewed at any time desired due to wear or other reasons;

Each member 5 is provided with a longitudinally projecting portion 16 having a recess 17 formedtherein and an adjusting screw 18 at the extreme end locked in adjusted position by the nut 19. 39

positioned in the slot 13 as is the tongue 14; of

the member 15.

The member 20 is constructed along the lines of my invention shown in Patent 1,773,193 in which I employ a longitudinal groove 24 to receive the trolley wire 2 and having pins 25 which are forced in the trolley wire 2 in order to secure the trolley wire in position. This construction assures the trolley wire being securely held in position and offering a smooth underrun surface which I term a running surface for the current collector as in the case of my previous invention.

It will be apparent tothose skilled in the art that having the member 20 pivotally mounted and with an adjusting screw 18 bearing against the member 20 that the alinement of the member 20 on each end may be adjusted with respect to each other and with respect to the members 10 and 15 which is not possible with a device in which the members 15 and 20 are constructed integral or fixed relative to each other. In order to further strengthen the member 20 against rotation about the pivot 22 the device is so assembled that the tongue 23 may engage with the portion 12 and thus tend to resist rotation. It will be noted that the member 10 is quite rigidly secured to the member 1 and the member 5 through the medium of the bolt 9.

The result of a movement of the members 20 out of their original position due to stress of the trolley wire 2 is to form an opening at the point A between the members 20 and 10 and this interrupts the smooth passage of the current collector across the device and may even tend to create arcing at that point due to the tendency of the collector to be thrown slightly out of contact while drawing current and may even produce an arcing at the point B. It will be recognized that in assembling the device the member 23 may have a clearance with respect to the member 10 so that all the tendency of the member 20 to rotate about the pin 22 will be resisted by the screw 18, but should the member 20 rotate beyond a predetermined amount represented by the clearance between the part 23 and the member 10, then the part 23 will engage withthe. member 10 and the tendency will be to limit or further resist further rotation of the member 20. If the member 20 does rotate on the pivot 22 so that the under surface of the trolley 2 at both ends is out of alinement then adjustment may be made by screwing down the screw 18.

Modifications will of course suggest themselves to those skilled in the art and therefore I wish to be limited only by my claims. I claim 1. A section insulator comprising an insulating bar and end members secured to the ends of the bar in insulated relation toeach other, a wire holding member pivotally secured to each end member, adjustable means to engage and hold the wire holding members 1 against pivoting and to change the alinement of the holding members relative to each other I and means on each holding member to secure a conductor thereto. 7 a

2. A section insulator comprising an insulating member and spaced metallic end ..membe1s secured thereto, a wire holding member pivotally secured to each end member, means to engage and hold the wire holdmg members against pivoting and to change to each other and means on each holding member to secure aconductor thereto.

3. A section insulator comprising an insulating member and spaced metallic end secured to the ends thereof, a wire holding member pivotally secured to each end member to pivot in a vertical plane, means to-resist pivotal movement of the holding members out of alinement with each other and to adjust their alinement at will, means on each holding member toreceive aconductor and means to hold the conductor against removal, abridging member of insulating material between the holding members and a renewable wear member between the adjacent end of each holding member and the bridging member.

5. A section insulator comprising an insulating member, end members secured thereto, a bridging member having a running surface and secured to the insulating member, wire holding members secured to the insulatingmember in pivotalrelation thereto and having means to hold a conductor having a running surface in alinement with the run ning surface onthe bridging member and means to move thewireholding members to bring the running surfaces of the wires into alinement with that of the bridging member.

6. A section insulator for trolley conductors comprising an insulating member, end members therefor, w1re holding members removably and pivotally attached to the end members and having means to hold a wire with and means TtO adjust the relation of the wire holding member to its end member.

7. A section insulator for trolley conductors comprising an insulating member, end

members therefor, wire holding members adjustably attached to the end members and means to adjust the relation of the wire holdingmembers to each other to secure alinement of the holding members.

8. A section insulator for trolley-conductors comprising an insulating member, spaced wire holding members and means to secure the said members to the insulating member, bridging means between the holding members and means to adjust the wire holding members relative to the bridging member to give a substantially straight under-running surface for a current collector. the alinement of the holdingmembers relative jecting longitudinally from the said IGCBiVr ing portion, a wire holding member pivoted to the said projecting portion intermediate the ends of the wire holding members, means associated with the free end of the projecting portion to adjust the relation of the adjacent holding member relative to its end member and bridging means between the adjacent ends of the holding members.

10. A wire holding device for a trolley wire section insulator comprising an elongated body having two longitudinal edges and a wire receiving groove along one longitudinal edge, pins movably mounted in the body to move in a transverse direction to the Wire and having their inner ends arranged to extend into the wire to prevent its longitudinal removal and means positioned along the other longitudinal edge and intermediate the ends to pivotally secure the holding device to a support.

11. A section insulator for a trolley conductor comprising an insulating member, spaced end members secured to the insulator member, a bridging member of insulating material having a running surface, supporting means provided with a recess secured to the insulator member to receive the ends of the bridging member to hold the bridging member in place, wire holding members movably attached to the end members and having a slot to receive the ends of the trolley conductor with the running face of the conductor in alinement with that of the bridging member and having other means to secure the conductor in place and means to enter the recess in the adjacent supporting means and means to adjust the angular relation of the wire holding members to their respective end member to bring the running face of the holding and bridging members into alinement.

In testimony whereof I aifix my signature.

SAMUEL S. MATTHES. 

